论文标题
Sensei：新船长CCD对Sub-Gev暗物质的直接检测结果
SENSEI: Direct-Detection Results on sub-GeV Dark Matter from a New Skipper-CCD
论文作者
论文摘要
我们使用新的〜2克高抗性的船长CCD提出了第一次直接检测搜索，该搜索是通过专用制造批次进行了优化的新的〜2克高抗性的船长-CCD。使用Fermi国家加速器实验室中的Minos洞穴中获得的24天数据，我们测量了包含一，两个，三个或4个电子的事件的硅检测器中最低的速率，并对各种子GEV范围的sub-GEV暗物质质量达到了世界领先的敏感性。用不同厚度的检测器屏蔽层获得的数据表明，高能轨道速率与先前被归类为“暗电流”的单电子事件的速率之间存在相关性。我们详细介绍了新的船长CCD的关键特征，该特征很好地为Snolab的〜100克老师实验的计划结构很好。
We present the first direct-detection search for eV-to-GeV dark matter using a new ~2-gram high-resistivity Skipper-CCD from a dedicated fabrication batch that was optimized for dark-matter searches. Using 24 days of data acquired in the MINOS cavern at the Fermi National Accelerator Laboratory, we measure the lowest rates in silicon detectors of events containing one, two, three, or four electrons, and achieve world-leading sensitivity for a large range of sub-GeV dark matter masses. Data taken with different thicknesses of the detector shield suggest a correlation between the rate of high-energy tracks and the rate of single-electron events previously classified as "dark current." We detail key characteristics of the new Skipper-CCDs, which augur well for the planned construction of the ~100-gram SENSEI experiment at SNOLAB.
